2 * net/tipc/bearer.h: Include file for TIPC bearer code
4 * Copyright (c) 1996-2006, 2013-2014, Ericsson AB
5 * Copyright (c) 2005, 2010-2011, Wind River Systems
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37 #ifndef _TIPC_BEARER_H
38 #define _TIPC_BEARER_H
42 #include <net/genetlink.h>
47 /* Identifiers associated with TIPC message header media address info
48 * - address info field is 32 bytes long
49 * - the field's actual content and length is defined per media
50 * - remaining unused bytes in the field are set to zero
52 #define TIPC_MEDIA_ADDR_SIZE 32
53 #define TIPC_MEDIA_TYPE_OFFSET 3
56 * Identifiers of supported TIPC media types
58 #define TIPC_MEDIA_TYPE_ETH 1
59 #define TIPC_MEDIA_TYPE_IB 2
62 * struct tipc_media_addr - destination address used by TIPC bearers
63 * @value: address info (format defined by media)
64 * @media_id: TIPC media type identifier
65 * @broadcast: non-zero if address is a broadcast address
67 struct tipc_media_addr
{
68 u8 value
[TIPC_MEDIA_ADDR_SIZE
];
76 * struct tipc_media - Media specific info exposed to generic bearer layer
77 * @send_msg: routine which handles buffer transmission
78 * @enable_media: routine which enables a media
79 * @disable_media: routine which disables a media
80 * @addr2str: convert media address format to string
81 * @addr2msg: convert from media addr format to discovery msg addr format
82 * @msg2addr: convert from discovery msg addr format to media addr format
83 * @raw2addr: convert from raw addr format to media addr format
84 * @priority: default link (and bearer) priority
85 * @tolerance: default time (in ms) before declaring link failure
86 * @window: default window (in packets) before declaring link congestion
87 * @type_id: TIPC media identifier
88 * @hwaddr_len: TIPC media address len
92 int (*send_msg
)(struct sk_buff
*buf
,
93 struct tipc_bearer
*b_ptr
,
94 struct tipc_media_addr
*dest
);
95 int (*enable_media
)(struct tipc_bearer
*b_ptr
);
96 void (*disable_media
)(struct tipc_bearer
*b_ptr
);
97 int (*addr2str
)(struct tipc_media_addr
*addr
,
100 int (*addr2msg
)(char *msg
, struct tipc_media_addr
*addr
);
101 int (*msg2addr
)(struct tipc_bearer
*b
,
102 struct tipc_media_addr
*addr
,
104 int (*raw2addr
)(struct tipc_bearer
*b
,
105 struct tipc_media_addr
*addr
,
112 char name
[TIPC_MAX_MEDIA_NAME
];
116 * struct tipc_bearer - Generic TIPC bearer structure
117 * @media_ptr: pointer to additional media-specific information about bearer
118 * @mtu: max packet size bearer can support
119 * @addr: media-specific address associated with bearer
120 * @name: bearer name (format = media:interface)
121 * @media: ptr to media structure associated with bearer
122 * @bcast_addr: media address used in broadcasting
123 * @rcu: rcu struct for tipc_bearer
124 * @priority: default link priority for bearer
125 * @window: default window size for bearer
126 * @tolerance: default link tolerance for bearer
127 * @domain: network domain to which links can be established
128 * @identity: array index of this bearer within TIPC bearer array
129 * @link_req: ptr to (optional) structure making periodic link setup requests
130 * @net_plane: network plane ('A' through 'H') currently associated with bearer
131 * @nodes: indicates which nodes in cluster can be reached through bearer
133 * Note: media-specific code is responsible for initialization of the fields
134 * indicated below when a bearer is enabled; TIPC's generic bearer code takes
135 * care of initializing all other fields.
138 void __rcu
*media_ptr
; /* initalized by media */
139 u32 mtu
; /* initalized by media */
140 struct tipc_media_addr addr
; /* initalized by media */
141 char name
[TIPC_MAX_BEARER_NAME
];
142 struct tipc_media
*media
;
143 struct tipc_media_addr bcast_addr
;
150 struct tipc_link_req
*link_req
;
152 struct tipc_node_map nodes
;
155 struct tipc_bearer_names
{
156 char media_name
[TIPC_MAX_MEDIA_NAME
];
157 char if_name
[TIPC_MAX_IF_NAME
];
162 extern struct tipc_bearer __rcu
*bearer_list
[];
165 * TIPC routines available to supported media types
168 void tipc_rcv(struct sk_buff
*skb
, struct tipc_bearer
*tb_ptr
);
169 int tipc_enable_bearer(const char *bearer_name
, u32 disc_domain
, u32 priority
);
170 int tipc_disable_bearer(const char *name
);
173 * Routines made available to TIPC by supported media types
175 extern struct tipc_media eth_media_info
;
177 #ifdef CONFIG_TIPC_MEDIA_IB
178 extern struct tipc_media ib_media_info
;
181 int tipc_nl_bearer_disable(struct sk_buff
*skb
, struct genl_info
*info
);
182 int tipc_nl_bearer_enable(struct sk_buff
*skb
, struct genl_info
*info
);
183 int tipc_nl_bearer_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
);
184 int tipc_nl_bearer_get(struct sk_buff
*skb
, struct genl_info
*info
);
185 int tipc_nl_bearer_set(struct sk_buff
*skb
, struct genl_info
*info
);
187 int tipc_nl_media_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
);
188 int tipc_nl_media_get(struct sk_buff
*skb
, struct genl_info
*info
);
189 int tipc_nl_media_set(struct sk_buff
*skb
, struct genl_info
*info
);
191 int tipc_media_set_priority(const char *name
, u32 new_value
);
192 int tipc_media_set_window(const char *name
, u32 new_value
);
193 void tipc_media_addr_printf(char *buf
, int len
, struct tipc_media_addr
*a
);
194 struct sk_buff
*tipc_media_get_names(void);
195 int tipc_enable_l2_media(struct tipc_bearer
*b
);
196 void tipc_disable_l2_media(struct tipc_bearer
*b
);
197 int tipc_l2_send_msg(struct sk_buff
*buf
, struct tipc_bearer
*b
,
198 struct tipc_media_addr
*dest
);
200 struct sk_buff
*tipc_bearer_get_names(void);
201 void tipc_bearer_add_dest(u32 bearer_id
, u32 dest
);
202 void tipc_bearer_remove_dest(u32 bearer_id
, u32 dest
);
203 struct tipc_bearer
*tipc_bearer_find(const char *name
);
204 struct tipc_media
*tipc_media_find(const char *name
);
205 int tipc_bearer_setup(void);
206 void tipc_bearer_cleanup(void);
207 void tipc_bearer_stop(void);
208 void tipc_bearer_send(u32 bearer_id
, struct sk_buff
*buf
,
209 struct tipc_media_addr
*dest
);
211 #endif /* _TIPC_BEARER_H */